US2615756A - Hose reel - Google Patents

Description

Oct. 28, 1952 A. J. GR NBERG HOSE REEL 4 sheets-skeet 1 Filed Oct. 27, 1945 1 INVENTOR. ALBERT J. GRANBERG ATTORNEYS Oct. 28, 1952 A. a.- mm ,7

nose REEL Filed Oct. 27, 1945 sheets-shat 2 Fig-i I mvsmoa ALBERT J. GRANBERG Oct. 28, 1952 A. J. GRANBERG HOSE REEL 4 Sheets-Sheet 3 Filed 001;. 27, 1945 HOSE REEL 4 Sheets-Sheet 4 Filed 001;. 27, 1945 lllll 11 3 INVENTCR. ALBERT J. GRANBERG ATTORNEYS Patented Get. 28 1952 UWIVUNITED' STATES PATENT "OFF E HOSE REEL Albert J. Granberg, Oakland, Calif., assignor of 7.99 per cent to Chesley M. Walter, 4.42 per cent each to Albert S. Kozman and Jacob E. Peregrine, 2.2 1'p'er cent each to Harvey May and Leslie E.-Alley, 1.10 per cent to James E. Smith, and 22.13 per cent to Robert W. Lindsay Original application February 12', 1945, Serial No. 577,567. Divided and this application October 27, 1945, Serial No. 624,961 j g My invention relates to a system for the distribution of liquid through a hose, and more particularly to a hose reel component of such system. I I f This application is a division of my application for Retr actible Hose Reel System, Ser. No. 577,567, filed February 12, 1945. I Among the objects of my invention are: n 1. To provide a novel and improved hose reel; 2. To provide a novel and improved power retractible hose reel;

3. To provide a novel and improved hose reel adapted tow ork freely even when exposedto twisting stresses. r

Additional objects of my invention will be brought out inthe following description .of a preferred embodiment of the same,'taken in-con-' junction with the accompanying drawings whereproved hose reel embodied as a component in the system of Figure'l;

Figure 5 is a view in section, taken in the plane- 55 of Figure 4;

Figure 6 is a view partly in section of a bypass control valve utilized inthe system of Fig.1.

As previously indicated, the invention has been illustrated as part of a system designed for 'use on a tank truck, and will be describedas such, although its field of application is not limited to this specific use.

Referring to the drawings, a gasoline distributing pump 1, preferably of the type dis-,

closedand claimed in my Patent No. 2,360,805 of October 28, 1941, is maintained in continuous drive connection from the truck engine (not.

shown) through a drive shaft 3 which is coupled to the pump shaft 5 through a universal coupling 1. This pump has its inlet or suction end connected to the tank (not shown) through arr inlet pipe 9, and pumps the liquid through a discharge hose or pipe I0, which includes an air separator H and meter 13, to a, discharge hose l5 carried on a suitable hose reel l1.

1 Claim. (01. 299 78 The air separator and meter; could be similar to that described and claimed in Patent No. 2,272,170 of February 10, 1942, in which I am a joint inventor. This device and the hose reel are preferably installed in a'conveniently accessible compartment "I 9 carried by the truck-.- I

-T he hose reel l1 comprises a pair of end sup-- ports 21' and interconnected by a hollow tubular shaft 25 fixed therein against rotation. On this hollow 'tubesha-ft there is rotatably mounted,'as by means of spaced bearings 21 and 29, a

drum 3| includinga pair of end spiders 33 and 35 supporting a drum cylinder 31, at each end of which as afllxed a hose confiningrim or barrier 39-and 4|, respectively. I

Extending within the drum and formed integrally with one of the end spiders 33, is a housing- 43 surrounding'the fixed shaft 25 and sealed thereto at eachend by means of rotaryseals 45' and 41, respectively. The details of the rotary seal are incidental to the invention, but broadly comprise an assembly of sealing washers of different materials such as rubber, carbon and bronze, within the housing at each end thereof and maintained under continual compression against the ends of the housing 43, bya strong intermediate spring 49 of the'compression'type, surrounding theshaft 25 and exerting a'strong outwardpressure' against each washer assembly- End play or endwise movement. of the reel' drum 3| is avoided by abutting the housing 43. with a thrust-collar 5| which surroundsthe shaft 25 and is affixed thereto by means of a, plurality of radially disposed setscrews' 53. This thrust collar is enclosed by an end 'cap aflixed to the I end of the housing 43 and formed. for the inclusion ofadustseal 51.

At a location'in the tubular shaft 25 within that portion which is encircled by the housing 43, the shaft is formed with one or more openings -59 to provide communication between the tubular shaft and the interior of the housing.

to provide Adjacent that end of; the housing 43 adjacent the spider 33, the housing is formed with a flangedopening 6| forflattachment thereto of a lead ofi hose connection 63 extending substantially radially through the drum and terminating.

in a bend 65 at the surface of thedrum- The hose l5 to be carried on the reel, has one end connected tothis lead-01f connection. The leadofl connection may-bedirected in either direction circumferentially of the drum, depending hose is 't'o be upon the direction in which the wound on the reel.

A reel constructed as described, is adapted to receive fluid by way of the hollow shaft 25, from which it will flow into the housin 43, and from there will be directed through the lead-off hose connection 63 to the hose itself.

In adapting the reel for the introduction of fluid into the tubular shaft, the shaft is preferably provided with a screw-threaded flange 61 at each end, and is closed off at one end by a flange plate 69 bolted to the flange with the customary leak-proof gasket H between the two. That end of the shaft into which the liquid is to be pumped, is coupled to the hose or pipe l coming from the pump I.

In a reel of the type described, the. drum 3| is always freely rotatable on the fixed shaft 25 and, therefore, will not bind on the shaft when the end supports are subject to twisting as is apt to occur in a truck installation due to weaving or road conditions. Similarly, the construction illustrated avoids the use of swivel connections, and particularly is this of importance where such connections are incorporated in a mobile installation as in a tank truck.

In preparing for the dispensing of gasoline from the truck tank, the operatorunwinds sufficient of the hose from the reel to reach the customers storage tank. Following the discharge of the proper amount of gasoline into the customers storage tank, the hose must of ne ces sity be rewound on the reel. A feature of the present invention resides in an hydraulic system whereby this may be readily accomplished by the operator.

Toward this end, I affix a ring gear 13 to one of the end spiders 33 of the reel. On the adjacent end support 2! for the reel, I mount an hydraulic motor 15 in drive connection with the ring gear 13 as by a pinion 14 meshing with gear 13. A chain drive could be substituted if desired. The hydraulic motor 75 is operated from.

an hydraulic generator 11 to which it is connected by a pipe system 19including a pipe connection 8| between the outlet of said generator and'the inlet of said motor, and a pipe connection between the outlet of said motor and the inlet of said generator.

A small reservoir 85 connected in the latter pipe connection 83 which constitutes the return line of the pipe system, serves to maintain a full supply of fluid in the hydraulic system, and at the same time functions to accommodate changes in the capacity of the system due to expansion or contraction thereof.

The hydraulic generator 11 is bolted to and supported by a gland 81 associated with the main pump l, and is driven from the main pump shaft by a gear train 89 including a pinion 9i keyed to the main pump shaft and meshing with a gear 93 keyed to the shaft 94 of the hydraulic generator 11. The gear train 89 is enclosed in a casing involving a plate 95 affixed to the pump gland 81 and hydraulic generator casing as by machine screws, and an enclosing cover 91.

The packing gland 81, it is noted, is bolted to the main pump l with its axis coinciding with the pump shaft axis, and consequently the gland may be rotatably adjusted to as many positions as there are bolts holding the gland to the pump.

. The significance of this lies in the factthat the hydraulic generator 11 being supported by the gland, is therefore likewise capable of being shifted to any one of a number of positions about the pump shaft 5 as an axis, and such poby the gear train 89.

4 sitional adjustment will likewise be permitted The ability to so shift the position of the hydraulic generator is of importance in a truck or any other type of installation where space is a material factor to be considered.

Inasmuch as the hydraulic generator is di rectly connected to the shaft of the main pump it will be in continuous operation so long as the truck engine is running, and it is necessary that the engine run so long as it is necessary to operate the truck or to pump gasoline from the truck tank. On the other hand, it is only infrequently that one finds it necessary to rewind the hose on the reel.

Consequently, to permit idling of the reel during such long intervening periods when rewinding is not necessary, I provide a normally short circuiting valve 99 (Fig. 1) between the two pipe connections 8| and 83 of the hydraulic system, and preferably locate such valve adjacent the hydraulic motor 15 where it will be within convenient reach and control of an operator, as he guides the hose onto the reel during rewinding. Such short circuiting valve may be of the type illustrated in Fig. 6 which has a passage I00 therethrough capable of being closed in varying degrees by a gate I01 which is biased to an open position by a biasing spring l03,'be'aring against a handle I05 which is capable of being manually operated to adjust the valve opening from its fully open position to any degree of closing. In its normal fully open position, the valve serves to by-pass around the hydraulic motor 15, the operating fluid in the hydraulic system, and thus the operating fluid has no. operatingeffect on the hydraulic motor, and the hose reel ll will accordingly idle.

However, as the valve gate is urged toward. it I closin position, more and more of the operating fluid will be diverted to the hydraulic motor 15 and cause the same to, respond at various speeds, depending on the degree of closing of the valve.

Thus the operator has positive control. and can govern the speed of rewind to suit his desires.

Not. infrequently, however, due to carelessness of the operator, or in spite of care exercised by. him, the hose may tangle or a kink may develop therein, and the resulting increase inl'oad'placed upon the hydraulic motor, could create pressure inthe system sufficient to damage the reel 'or purpose, in mind, I have developed a pump ca-- pable of use either as the hydraulic generator'or as the hydraulic motor of the system.

Such pump comprises a casing l09'havingan internal cylindrical chamber l I l-defined bya p'a'ir of spaced side walls 3- and H5 and a connect- One of the side walls I I5; is'formed' internally with a blade guide track about the axis n lwal ofsaid chamber in the, form of a circular chanaxis ofthe chamber. This channel is adapted to slidablyreceive a plurality-of arcuate segments The sideI I3 is formed witha'n's'a' "ial end pocket I2 'I- to receive a rotaryseal I29 and a shaftbearing I3 I of the ball bearing typen 'lhe umeshan 94 passes through this rotary-seal and bearing, and terminates in a bearing I33 in the opposite side wall H5, the bearings being in alignment on an axis parallel to the axis of the chamber I I I but eccentrically disposed with respect thereto.

The shaft 94 carries a rotor I35 within the chamber, such rotor including a peripheral rim I31 on a plurality of spokes I39 equal in number to the number of blades I25 to be employed in the pump or the number of segments I23 for anchoring the blades. The peripheral rim I3'I of the rotor extends the axial length of the chamber, and is of a diameter to tangentially approach the cylindrical surface of the chamber at its nearest point.

Each of the rotor spokes I39 is provided with a deep radial slot I4I extending through the rim of the rotor, to slidably receive one of the blades I25 of the pump, such blade being pivotally anchored to one of the slidable segments I23 as by a pivot I43 affixed to an edge of the blade and inserted into a pivot hole formed in the segment.

As can be seen from Figure 2, the rotor spokes are of reduced thickness, thereby permitting liquid flow from one portion of the circular channel H9 to another. The significance of this lies in the fact that the segments I23 in their cyclic movement around the pump shaft alternately approach and recede from each other, thus alternately expelling and drawing in liquid into the channel. In as much as reverse conditions exist at diametrically opposite points of the channel, an interchange of liquid is always demanded during operation of the pump. As indicated, the

rotor spokes permit of such interchange.

Each blade is of a length to approach the cylin-. drical surface of the chamber with a minimum of clearance with respect thereto. Inasmuch as the circular channel is concentric with the chamber, all blades will be of the same length.

A passage to the pump chamber is provided to one side. of the tangential contact of the rotor in the form of a channel I formed in the connecting wall I II and having communication with the exterior of the pump through a threaded opening I41. A similar passage I49 having outside communication through a corresponding threaded opening I5I, is provided to the other side of such tangential contact. Either passage may serve as the inlet or discharge passage of the pump, depending upon the direction of rotation of the rotor desired. For convenienceof disclosure, the passage I45 will be considered the inlet passage. Each blade in turning, effects a cut-off at the end I53 of the inlet passage I45 and permits of initial discharge from a pocket when such blade reaches the corresponding point I55 of the discharge passage.

It is important that the maximum spread or developed angle between blades should substantially span the arc between the end of the inlet passage and the beginning of the discharge passage as shown in the drawings. The importance of this can best be seen if unfavorable conditions are assumed; Thus, should maximum spread be reached at an angle which does not span the arc in question, the subsequent reduction in the spread angle, which operation of the pump would call for, couldmot .be efiectedagainst the incom pressible liquid between the bladesca'n'dsomething must "give way. This. means bursting of the pump. I

Were the angle of spreadgreaterthan the arc in'question, a vacuum will developbetween ,the

blades and cause considerable noise-comparable to water hammerin steam pipes...

'- The aforementioned 'relation'hipcan best be obtained "by proper determination of the 'resp'ec nve iengms of the inlet passage and discharge passage.

In conventional pumpsoperating on this general principle, the cylindrical wall of the chamber is employed as a guide for the blades and consequently each blade must be in constant frictional engagement with the surface of the chamber, resulting in wear of the blades and oftentimes in the blades binding and causing damage to the pump. By anchoring the blades in arcuate segments as described, a minimum clearance may be maintained between the blades and the cylindrical wall of the chamber whereby the blades are not exposed towear and under no conditions could they possibly bind.

In view of the eccentric disposal of the rotor, the blades do not maintain radial positions in the pump chamber as they are moved around by the rotor, but are forced to swing slightly to either side of such radial positions. Under the circumstances, and to assure maintenance of minimum clearance between the blades and the cylindrical surface of thepump chamber, the blades are of a thickness such that in positions of maximum swing, an extreme edge of the blade trated in Figure 3, the pump will retain prime ragardless of the directional rotation thereof.

From the above description of a preferred embodiment of my system and components thereof as adapted for installation on a tank truck, it will be apparent that the same fulfills all the objects of my inventionas previously set forth, and while I have described one embodiment of my invention in considerable detail, the same is subject to alteration and modification, without departing from the fundamental concepts thereof.

I accordingly do not desire to be limited in my protection to the specific details illustrated and described, except as may be necessitated by the appended claim.

I claim:

A hose reel for mounting on a truck, comprising a pair of parallel spaced end supports, a hollow shaft fixedly supported on said end supports and having one end closed; a reel drum rotatably mounted on said shaft, said reel drum including a pair of end spiders, a drum cylinder carried by said spiders and surrounding said shaft, and a hose confining rim affixed to each of said spiders adjacent the ends of said drum cylinder; a housing extending inwardly to an intermediate point within said drum cylinder from one of said spiders and having communication with the interior of said shaft, a lead-off hose connection extending from said housing to the surface of said drum cylinder adjacent one of said hose confining rims;

and a power drive connection to said reel, includ- 7 ing a gear on one of said spiders for engagement Number by a driver pinion. 446,745 ALBERT J. GRANBERG. 622,067 988,766 REFERENCES CITED 5 1,244,818 The following references are of record in the 1339385 file of this patent: 3 10 7 2,340,217 UNITED STATES PATENTS Number Name V Date 10 8 Name Date Schenck Feb. 17, 1891 Patterson Mar. 28, 1899 Frigon Apr. 4; 1911 Witt Oct 30, 1917 Perrine May 11, 1920 Churchward Mar. 30, 1943 Grise Jan. 25; 1944

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